Improvement in drawing and twisting heads foe spinning machinery



@nit-rh tstrs lstrnt @ffice HENRY T. POTTER, OF NORWIOH TOWN,CONNECTICUT, ASSIGNOR TO HIM- SELF, EDWIN ALLEN, AND ELlSHA H. HOLMES.

Letters Patent. No. 62,498, dated February 26, 1867.

@te tlgehul aferra tu in their Eaters tattiit mit making gaat nf itstune.

TO ALL WHOM IT -MAY OONOERN:

Be it known that I, HENRY T. POTTER, of Norwich Town, in the county ofNew London, and State of Connecticut, have invented a certain new anduseful Improvement on Drawing and Twist-ing Heads for Spinning orRoving, of which the following is a full, clear, and exact description,reference being had to the accompanying drawing, forming part of thisspecification, and in which- 4 y Y Figure 1 represents a sectional viewof a drawing and twisting head, constructed according to my imprcve=ment, supposing the device to occupy a vertical position.

Figure 2, a top view or plan thereof.

Figure 3, an inverted plan of the same; and

Figure 4, an outside longitudinal view of the socketed screw-headforming part of my improved combination which constitutes the invention.

vLike letters indicate like parts throughout the several figures.

improvement has reference to that description of drawing and twistingheads applicable tolspinning and roving various fibrous materials, butmore particularly wool, in which the sliver/.is fed through arevolvingtube provided with drawing rollers, that, in addition to theirrevolution with the tube, are made to rotate on their own axes by thegear of said rollers with a worm or screw-thread cut in the interior ofan outer cylinder, box, or head to the rollers; and said invention moreparticularly relates to a certain improvement on such drawing andtwisting heads which is the subject of a separate application forLetters Patent of the United States, and in which the screw-head or boxis so hung and operated as that it may either be stationary to give afixed twist relatively to the` draught, or may be rotated as well as thetube which carries the rollers, and either in the same or oppositedirection, at different velocities, whereby the twist and draughtrelatively to each other may be more or less varied, and adjusted tomeet diierent peculiarities of the fibre; some slivcrs or descriptionsof wool admitting of more andothers of less twist in proportion to thedraught. The nature of this invention on said improvement consists in apeculiar combination of devices for producing such action, in which therevolvingtwisting tube with its drawing rollers is made to tit androtate within a socketed construction of screw-head that gives thedrawing motion to the rollers, and that is made capable of revolving inthe same or reverse direction to the twisting tube by' a worm-wheelformation on it, gearing with an endless screw on the shaft which isemployed to rotate the head, which combination is not only compact,simple, and readily admits of the parts being detached for the purposeot' cleaning or repair, but gives a positive motion to the head that isfree from slip. Y

Referring to the accompanying drawing, A represents a bracket forbolting the drawing and twisting head to the frame of a spinningmachine, said frame carrying any number of such heads. B is a tubularbearing or socket connected with or forming part of said bracket, andserving to receive, so as to be capable of free rotation Within it, asocketed .screw-head, C, which has an interior spiral or screw-thread,b, preferably at or near the feed end, into which the teeth of thedrawing rollers c c mesh, and which serves to give' said rollers theirdraw.'- ing action asthey are rotated in common with the twisting tubeD, that carries them, and which may be rotated by a whirr, d. On theoutside of said sockcted screw-head, preferably at or `near its oppositeend to that of the spiral or screw-threads b, are teeth, e, of a spiralor worm character, into which an endless screw, E, meshes, said screwprojecting through the shell or socket B, and being rotated by a shaft,F, which may be driven'bycone pulleys, furnished with a suitable reversemotion to vary its velocity and direction of motion relatively to thetwisting tube D. By this combination it will be obvious that on failingto give motion to the shaft F, then the twisting tube D and drawingrollers c e will have a iixed relative velocity, the one to the other,thereby giving a fixed draught in relationto the twist; but, on settingthe shaft F in motion, fast or slow, and

so as by its screw E to rotate the screw-head C either in the same oropposite direction to that of the tube D,

accordingly as more or less draw is required in relationto the twist,the screw-head C in revclvingwill produce such changed or variableaction on the drawing rollers. The gear of the shaft F by its screw E,with the screwa head C by its teeth e, being a positive one, there willbe no tendencyto slip on starting, driving or altering .the

velocity or direction of motion ofthe screw-head, which is important;while the combination, es described, is not only simple and' compact,but readily admits of the parts being detached for cleaning or repair.

What I claim as my invention, and desire to'secuie by Letters Patent,is`

The combination, with the twisting tube D, and drawing rollers e c, ofthe socketed screw-head C, and .revolving screw E, in gen1' therewith,for operation together, the whole being constructed and arrangedsubstantially as and for the purposeor Apurposes herein set forth.

HENRY T. POTTER.

Witness es SOLOMON LUCAS, WEBSTER PARK.4

